Disconnect the PVC hose that goes into the manifold vacuum connector by pulling it off (spark plug boot pliers or needle-nose pliers may make grasping it for removal a bit easier).
The catch can mounting bracket  attaches to the engine block; on the C6  an extension tube (supplied) is required  to move the bracket out from the engine  block and is secured using the supplied  bolt and washer. This extension tube is  visible just to the left of the black catch  can mounting bracket on this C6 engine.
Remove the oil filler cap to facilitate  removing the fuel rail cover.
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C6 CATCH CAN UPGRADE
Remove the passenger side fuel rail  cover by pulling it up (the cover is  held in place by snaps). After the  cover is removed, reinstall the oil filler cap to  prevent any debris from entering.